Balanced Cross Section and Three-Dimensional Structural Analysis of the Northridge Earthquake Thrust System

南森9416191这项研究将产生11个平衡的、可恢复的、横跨圣苏珊娜山脉背斜的横断面，以及同一地区的一系列地下结构图。这些区段将恢复到约3 Ma，或者说在该地区开始显著辐合的大约时间。这些剖面将允许计算跨越背斜的会聚速率，以及隐伏逆冲断层的滑移量和滑移率。它们还将允许在断层表面、地下室顶部和第三系地层顶部生成结构图，这反过来又将允许建立北岭地区的三维图像。这项研究的结果将极大地帮助了解洛杉矶和圣费尔南多山谷的地下结构，并为地震危险性解释提供急需的几何和运动学约束。***

Namson 9416191 This study will produce 11 balanced, restorable, cross sections across the Santa Susana Mountains anticlinorium and a series of subsurface structure maps for the same area. The sections will be restored to about 3 Ma, or the approximate time of initiation of significant convergence in the region. The sections will permit calculation of the convergence rates across the anticlinorium, and the amount of slip and slip rates of hidden thrusts. They will also permit the generation of structure maps on fault surfaces, top of basement and tops of Tertiary formations, which in turn will permit the building of a three-dimensional picture of the Northridge region. The results of this study will greatly assist understanding of the subsurface structures of the Los Angeles and San Fernando Valleys, and provide much-needed geometrical and kinematic constraints for seismic hazard interpretations. ***